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Fluiseal Drybreak Couplings

  • The Alpha Process Controls Fluiseal quick connect drybreak coupling provides a safe and efficient means of transferring hazardous liquids and gases into road or rail tankers and drilling rigs.

    The Fluiseal drybreak coupling is well proven with over 30 years’ field service and is used by many of the world's major oil and gas companies.

    The simple operating procedure provides quick and safe connection, with rapid tanker turnaround and improved operator efficiency, No hammers are required to tighten coupling, and there are no threads to wear. You can create a pressure tight connection in under 10 seconds.

    For more details and free application evaluation contact us.

  • Consistent
    The consistent drybreak facility reduces risk to operators and local environment from product spillage.

    Fully interlocked design
    The  two-stage operation of the coupling comprises locking the male and female halves together before opening the flow valve handle. The coupling cannot be disconnected while under flow condition.

    Damage resistant
    Coupling does not have to be turned in order to couple, which could lead to hoses twisting and/or damage to seals due to abrasion, and no swivel joints are required.

    Fast connect/disconnect time allowing faster tanker turnaround or a reduction in loading points or both.

    Complete ability
    Ability to close down valves under full flow and pressure conditions.

    High strength
    High strength and bending moment resistance when connected.

    Easy to use
    Easy exchange of main flat seal without the need to drain the line.

    Reliable operation
    The design of the coupling ensures reliable operation even in the most demanding operations.

    Life span
    Increased life for main seal, this is achieved by adjusting the eccentric cams on either side of the couplings.

    Range of applications
    Supplied in volume to major oil, gas and petrochemical companies throughout the world.

    Rigorously tested
    Nitrogen gas testing for each individual coupling.

    Obtainable records
    Impeccable records retention to ensure correct spares are supplied when required.

    Spare parts
    Spare parts held in stock.

    Product trials
    Numerous actual product trials at customer sites have over the years proved beyond doubt the effectiveness of the APC couplings.

    Manufacturing quality
    Manufactured to the highest quality control standard - QA system ISO 9001 2008 approved.

    CE marked to PED 97/23/EC

  • Sizes
    2", 3" and 4" or metric equivalents.

    Main body construction
    Standard material stainless steel 316.

    Threaded and flanged to most standards including ANSI, BS, DIN, ISO and JIS.

    Viton®, Buna, PTFE, Polyurethane, Kalrez®, Chemraz®, others on request. All trademarks acknowledged.

    Coupling designed for bi-directional flow.

    Temperature range
    -50˚C to 100˚C.

    Pressure tested
    Pressure tested to 34bar.

  • Fluiseal drybreak couplings applications:

    • Road tanker loading and unloading

    • Rail tanker loading and unloading

    • Supply vessel to drilling rig

    • Process product transfer.

    Typical products handled include:

    • Liquefied gases: LPG, butane, propane, propylene

    • Oils: crude, diesel, fuel oils, Jet A1

    • Chemicals: ammonia, methanol, aromatics, ethylene & propylene, VCM, alcohols & acids, refrigerants, forane

    • Speciality: hydraulic oils, inks, paints, solvents, locomotive fuelling, helicopter fuelling, aircraft de-icing fluids.

  • Q. What is a drybreak coupling?

    A. A drybreak coupling usually comprises a female (hose end) fitting and a male (tanker fitting) that are connected/disconnected on a regular basis to form a liquid and pressure tight coupling. Drybreak couplings generally have a valve arrangement that shuts down the liquid flow prior to the disconnection of the male and female couplings. More sophisticated drybreak couplings such as the Alpha Fluiseal are fully interlocked to close down the product flow prior to coupling disconnection.

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